Window-ventilator.



G. A. WALKER.

WINDOW VENTILATOR.

APPLICATION FILED SEPT. I9, 1914.

Patented Oct. 17, 1916.

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GEORGE A. WALKER, OF OAK PARK, ILLINOIS.

WINDOW-VENTILATOR.

Specification of Letters Patent.

, Patented Oct. 1 1916.

Application filed September 19,1914. -'Se1'1a1"No."862,442.

To all whomc't may concern.

Be it known that I, GEORGE A. WALKER, a citizen of the United States,residing at Oak Park, in 'the county ofCook and State of Illinois, haveinventedcertain new and useful Improvements in WVindow-Ventilators, ofwhich the following is a specification.

This invention relatesto a ventilating device adapted to be inserted ina window below the lower sash thereof, and the objects of the inventionare to produce an efiicient ventilator which may be very cheaplymanufactured; which is extensible and contractible to fit in windows ofdifferent widths; which may be inserted in the window in a variety ofpositions to suit the wishes or convenience of the user; and whichpermits fresh air to enter while at the same time excluding or softeningthe light, thus making the ventilator peculiarly adapted for use in abedroom window.

In the accompanying drawings, Figure 1 is a front view of a window inwhich is inserted a ventilator embodying the features of my invention.Fig. 2 is a transverse vertical sectional View through the window andthe ventilator. Figs. 3, 4L and 5 are horizontal sectional viewsillustrating the different positions of the ventilator when inserted inwindows of different width. Figs. 6 and 7 are also horizontal sectionalviews showing different positions in which the ventilator may be placedto suit the wish or convenience ofthe user. Fig. 8 is a fragmental sideelevation of a modified construction. Fig. 9 is a view, on an enlargedscale, taken in the plane of dotted line 9-9 of Fig. 8. Fig. 10 is aperspective view of a clip comprised in the modified construction.

The window casing is indicated at A and the lower sash at B. In itspreferred embodiment, which I have illustrated in the drawings, theventilator comprises a body, the end portions of which are secured inrigid end frames and the mid-portion of which is flexible. The body maybe composed of a plurality of spaced parallel wooden strips or splints10, which may be woven together in the form of a fabric by warp cords11. The strips 10 extend vertically and those at the end portions of thebody are rigidly secured in end frames 12, which in the present instanceare threesided. The strips which are-located between the adjacent endsof the end frames '12 are held in place solely by .the warp cordsfll. I

In inserting the ventilator in a window, the lower ,sash Eis .raisedasufiicient distance, the end frames 12 are inserted in the sash groovesof the-casing A and ,if the window is of sufficient width,'the'vent'ilator will lie in a straight line beneath the lower edge of.the :sash, :which is: pulled down to rest upon the upper edge of theventilator.

For a narrower window, the central flexible portion of the ventilatormay be bowed to one side of the plane of the end frames as indicated inFig. 4. For a still narrower window, the adjacent ends of the rigid endportions of the ventilator may be over lapped more or less, with themiddleflexible portion lying between them, as shown in Fig. 5.

Figs. 6 and 7 indicate two further positions in which the ventilator maybe placed, either bowing inwardly or outwardly from the window as mayplease the user.

Figs. 8, 9 and 10 illustrate a modified construction wherein a clip 13is pivoted to either or both of theupper and lower edges of theventilator, the clip being pivoted at 14 to one of the end frames 12,and being of suflicient length to engage the other end frame. As shownin Fig. 9, the flexible midportion of the ventilator may be held in theplane of the ventilator by the clip '13, the splints 1O assuming anoverlapped or angular position. When it is desired to place theventilator in some such position as those shown in Figs. 6 and 7, theclip 13 may be swung out of operative position.

It will be seen that this ventilator may be very cheaply manufactured,and that owing to the flexible central portion it may be adapted towindows that vary in width and may be placed in several differentpositions in a window. The ventilator is peculiarly adapted for use inbed chambers on account of the fact that it acts as a'blind in excludinga portion of the light and thus gives a softened light inthe room.Unlike an ordinary window shade, the ventilator permits the passagetherethrough of a sufficient quantity of fresh air for ventilationpurposes, while preventing a direct draft.

It is obvious that the embodiment shown in the drawings is susceptibleof various modifications without departing from the scope of theinvention as defined by the terms of the appended claims.

I claim as my invention:

1. A ventilator comprising a pair of end frames spaced apart at theiradjacent edges and a plurality of slats filling said end frames forminga flexible connection therebetween, a portion of said end frames andslats being adapted to overlap each other.

2. A window ventilator comprising a pair of end frames, spaced slatsrigidly secured in said frames and spaced slats flexibly connectedtogether and joining the adjacent ends of said end frames, said endframes being adapted to extend inwardly or outwardly from the plane ofthe window.

3. A ventilator comprising a body composed of spaced slats flexiblyconnected to- Gopies of this patent may be obtained for gether, theventilator being adapted to be inserted edgewise in a window beneath thelower sash thereof, with said slats standing substantially vertically,end frames in which the end portions of said body are rigidly secured,the adjacent ends of said frames being spaced apart and a portion ofsaid body between said end frames forming a flexible connection betweenthe frames, said end frames being adapted to bow inwardly or outwardlyfrom the plane of said window.

In testimony whereof, I hereunto set my hand in the presence of twowitnesses.

GEQRGE A. WALKER.

In the presence of GEORGE L. OHINDAHL, MARGARET H. MANN.

five cents each, by addressing the "Commissioner of Patents, Washington,D. 0.

